We look at the division of 577265 by 90 
The aim is to understand the frequency of 90 in 577265.

Going ahead to step 1:
90 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 90

Moving on to step 2:
57 divided by 90 is 0 with a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Include the next digit (7) from the dividend after 57, then repeat: 577 / 90

Advancing to step 3:
90 goes into 577 6 times with a remainder of 37.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 540 from 577, we get 37.
Fetch the next digit (2) from the dividend, attach it to 37 and continue: 372 / 90

Step 4:
The number 90 fits into 372 4 times, leaving a remainder of 12.
The next digit of our result is 4. 
Result so far: 64.0
Subtract 360 from 372 to get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 90

Moving on to step 5:
90 can be fit into 126 1 times, resulting in a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 641.0
Subtracting 90 from 126 leaves us with 36.
Bring next digit (5) of the dividend behind the 36 and repeat the process: 365 / 90

On to step 6:
If we divide 365 by 90, we get 4 and a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 6414.0
If we subtract 360 from 365, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
The number 90 fits into 50 0 times, leaving a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 6414.0
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
If we divide 500 by 90, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 6414.05
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
500 divided by 90 is 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 6414.055
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 6414.055, and the remainder is 0.005.